A modular sensor microsystem utilizing a universal interface circuit

The performance features of MEMS transducers allow the development of a new class of small, low-power sensor microsystems which utilize a suite of sensors to support a wide range of applications. This paper presents a system-level framework for constructing such microsystems where system modularity for application adaptability is a primary design consideration. System architecture, communication protocols, modular packaging, and interface electronics are discussed in general terms, and an implementation of these concepts is presented. Key requirements for microsystem modularity, such as a communication bus and a universal microsensor interface circuit which support plug-n-play operation for online reconfiguration, are developed and presented in this paper.

[1]  C. Hagleitner,et al.  A gas detection system on a single CMOS chip comprising capacitive, calorimetric, and mass-sensitive microsensors , 2002, 2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315).

[2]  Joseph M. Kahn,et al.  An autonomous 16 mm/sup 3/ solar-powered node for distributed wireless sensor networks , 2002, Proceedings of IEEE Sensors.

[3]  K.D. Wise,et al.  Programmable mixed-voltage sensor readout circuit and bus interface with built-in self-test , 1999, 1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC. First Edition (Cat. No.99CH36278).

[4]  Christoph Hagleitner,et al.  CMOS single-chip gas detection system comprising capacitive, calorimetric and mass-sensitive microsensors , 2002, IEEE J. Solid State Circuits.

[5]  Junwei Zhou,et al.  Communication Buses and Protocols for Sensor Networks , 2002, Sensors.

[6]  Khalil Najafi,et al.  A generic multielement microsystem for portable wireless applications , 1998, Proc. IEEE.

[7]  Kensall D. Wise,et al.  The coming opportunities in microsensor systems , 1991, TRANSDUCERS '91: 1991 International Conference on Solid-State Sensors and Actuators. Digest of Technical Papers.

[8]  Khalil Najafi,et al.  A generic interface chip for capacitive sensors in low-power multi-parameter microsystems , 2000 .

[9]  Gerard C. M. Meijer,et al.  A Universal Transducer Interface for Capacitive and Resistive Sensor Elements , 1997 .